Service manual

SiteStand Mobile Docking Station Service Manual 17
Docking Station Fingers
Table A-1 shows the 14 interface docking fingers that engage when the UI unit is put
in place in the docking station. These signals are then routed to sub circuits or pass
through the Docking Station PCB to the mixed signal coax connector described in
table A-1. From the connector the signals are routed through a cable to their
appropriate interfaces in the base of the Docking Station.
Table A.1 Docking Fingers to UI Specifications
SIGNAL PINS
FROM/
TO
LEVEL DESCRIPTION
+16V
P501-1 P2-1 +16.0V Output from Dock via AC/DC Adapter
+16V Return P501-2 P2-2, +.2V to-
0.2V
Power Return - isolated from ground
Video P501-3 P2-15 +1Vpp Composite Video / Luminance
Video Return P501-4 GND,
P2-14, P2-
16
0V Signal Return - tied to ground
Control_Line P501-5 P2-3 0V to 3.3V Print Control/ API_Line
Stat_Frame P501-6 P2-4 0V to 5V Print Satus/ API_frame
PrnRet P501-7 GNFD, P2-
5
0V Print Satus/ Return - tied to ground
RXD P501-8 P2-6 0V to 3.3V
-12V to 12V
Receive data from Dock to C1 Main
through RS232 tranceiver
TXD P501-9 P2-7 0V to 3.3V
-5 to 5V
Transmit data from C1 Main to Dock
through RS232 tranceiver
DGND P501-10 P2-8 0V Data Ground - tied to ground
RTS P501-11 P2-9 0V to 3.3V
-5V to 5V
Request to Send from C1 Main to Dock
through RS232 tranceiver
CTS P501-12 P2-10 0V to 3.3V
-12V to 12V
Clear to Send from C1 Main to Dock
through RS232 tranceiver
Dock_Sense P501-13 GND 33uA Dock_Sense -tied to ground to activate
Audio P501-14 P2-18 0.7v p-p Mono Audio Output signal (C1.99 only)